I have been searching this forum for similar threads and haven't found anyone with this problem. I did a clean install of Win7 Home Premium on a Dell Inspiron 9400 that had Vista Ultimate (both 32 bit versions). The laptop has 2 gigs of ram and a core2 duo processor so I don't really need 65 bit os yet. Now, when I boot Win7 goes through the boot-up routine, but when the desktop starts up, nothing I click on works. If I shut down the machine, using the power button and wait 10-seconds, it starts up fine the second time. Any ideas as to why it hangs? I tried the start-up repair option on the Win7 install disc, and also the technique in KB#927392 and it still happens. I really don't want to do a complete re-install of Win7 because I just got all my apps back to working after two weeks of work.